/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.node;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

/**
 * This is a class that bridges command line user input and background
 * BrokerNode process.
 */
public class BrokerNodeFront {
    static int frontPort = 11111;

    public static void main(String[] args) throws Exception {
        if (args.length != 2) {
            String usage = "Usage: java cgl.narada.node.BrokerNodeFront "
                + "<brokerCommunicatorPort> <brokerCommunicatorFile>";
            System.out.println(usage);
            System.exit(0);
        }
        int frontPort = Integer.parseInt(args[0]);
        String uuidFileLocation = args[1];
        BufferedReader cmdReader = 
            new BufferedReader(new InputStreamReader(System.in));

        final Socket sock = new Socket("localhost", frontPort);
        if (sock == null) {
            System.out.println("can't connect to Broker, exit");
            System.exit(1);
        }
        PrintWriter sockWriter = new PrintWriter(sock.getOutputStream(), true);

        new Thread(
            "ReadFromBroker") {
            String fromBroker;

            InputStreamReader isReader = new InputStreamReader(sock
                .getInputStream());

            BufferedReader sockReader = new BufferedReader(isReader);

            public void run() {
                while (true) {
                    try {
                        fromBroker = sockReader.readLine();
                        if (fromBroker == null)
                            break;
                        System.out.println(fromBroker);
                    } catch (IOException ioe) {
                        // ioe.printStackTrace();
                        System.out.println("Terminated connection to Broker!");
                        break;
                    }
                }
            }
        }.start();

        String cmdLine;
        File idFile = new File(uuidFileLocation);
        if (idFile.exists()) {
            BufferedReader idReader = new BufferedReader(new FileReader(idFile));
            String uuid = idReader.readLine();
            if (uuid != null)
                sockWriter.println(uuid);
        }
        while (true) {
            cmdLine = cmdReader.readLine();
            if (cmdLine == null)
                break;
            sockWriter.println(cmdLine);
        }
        try {
        } finally {
            if (sock != null)
                sock.close();
        }
        System.exit(0);
    }

}
